Abstract
<jats:p>As renewal programmes of Mass Rapid Transit (MRT) networks stretch over decades and involve heavy civil works, constrained access windows, intricate system interfaces and unavoidable operational disruption, traditional project delivery models fall short.</jats:p> <jats:p>Managing Complexity in MRT Renewals, a concise, practitioner focused guide, reframes MRT renewal as a continuous system condition rather than a series of standalone projects. It examines how interface complexity, access regimes, organisational capability, assurance processes and leadership behaviours combine to shape outcomes in live operational environments. Drawing on hands on experience from the UK, Middle East and Southeast Asia, it blends systems engineering principles with operational reality to provide practical frameworks, diagnostic tools and strategic insight.</jats:p> <jats:p>Written for infrastructure owners, operators, engineers and senior practitioners, this practical reference equips readers to sustain safety, performance and public confidence throughout extended, high stakes renewal periods where the network must evolve, but the city cannot stop.</jats:p>